34 results about "Adaptive resonance theory" patented technology

A fault detection system for use with a solar hot water system may include a data acquisition module which may, in turn, include a plurality of sensors. Input data may include a sensed condition. The system may also include a neural network to receive the input data which may be a multi-layer hierarchical adaptive resonance theory (ART) neural network. The neural network may perform an analysis on the input data to determine existence of a fault or a condition indicative of a potential fault. The fault and the condition indicative of the potential fault are prioritized according to the analysis performed by the neural network. A warning output relating to the fault and the condition indicative of the potential fault is generated responsive to the analysis, and is displayed on the user interface.

Techniques are disclosed for identifying anomaly object types during classification of foreground objects extracted from image data. A self-organizing map and adaptive resonance theory (SOM-ART) network is used to discover object type clusters and classify objects depicted in the image data based on pixel-level micro-features that are extracted from the image data. Importantly, the discovery of the object type clusters is unsupervised, i.e., performed independent of any training data that defines particular objects, allowing a behavior-recognition system to forgo a training phase and for object classification to proceed without being constrained by specific object definitions. The SOM-ART network is adaptive and able to learn while discovering the object type clusters and classifying objects and identifying anomaly object types.

Techniques are disclosed for analyzing a scene depicted in an input stream of video frames captured by a video camera. In one embodiment, e.g., a machine learning engine may include statistical engines for generating topological feature maps based on observations and a detection module for detecting feature anomalies. The statistical engines may include adaptive resonance theory (ART) networks which cluster observed position-feature characteristics. The statistical engines may further reinforce, decay, merge, and remove clusters. The detection module may calculate a rareness value relative to recurring observations and data in the ART networks. Further, the sensitivity of detection may be adjusted according to the relative importance of recently observed anomalies.

A sequence layer in a machine-learning engine configured to learn from the observations of a computer vision engine. In one embodiment, the machine-learning engine uses the voting experts to segment adaptive resonance theory (ART) network label sequences for different objects observed in a scene. The sequence layer may be configured to observe the ART label sequences and incrementally build, update, and trim, and reorganize an ngram trie for those label sequences. The sequence layer computes the entropies for the nodes in the ngram trie and determines a sliding window length and vote count parameters. Once determined, the sequence layer may segment newly observed sequences to estimate the primitive events observed in the scene as well as issue alerts for inter-sequence and intra-sequence anomalies.

Techniques are disclosed for detecting the occurrence of unusual events in a sequence of video frames Importantly, what is determined as unusual need not be defined in advance, but can be determined over time by observing a stream of primitive events and a stream of context events. A mapper component may be configured to parse the event streams and supply input data sets to multiple adaptive resonance theory (ART) networks. Each individual ART network may generate clusters from the set of inputs data supplied to that ART network. Each cluster represents an observed statistical distribution of a particular thing or event being observed that ART network.

The invention is a method for detecting out-of-specification quality of a product and estimating actually measured value of the product. The method for detecting the out-of-specification quality of the product is to construct a fault detection (FD) model representing the relationship between technological parameters and the out-of-specification of the product by applying a classification and regression tree (CART) method so as to detect the condition that the process data parameters are all in the specification (normal) but the product quality goes beyond the specification on a production line in real time. The method for estimating the actually measured value of the product is to establish a measured data quality index (DQIy) model according to an adaptive resonance theory 2 (ART2) and normalized variability (NV).

Described is a system for object and behavior recognition which utilizes a collection of modules which, when integrated, can automatically recognize, learn, and adapt to simple and complex visual behaviors. An object recognition module utilizes a cooperative swarm algorithm to classify an object in a domain. A graph-based object representation module is configured to use a graphical model to represent a spatial organization of the object within the domain. Additionally, a reasoning and recognition engine module consists of two sub-modules: a knowledge sub-module and a behavior recognition sub-module. The knowledge sub-module utilizes a Bayesian network, while the behavior recognition sub-module consists of layers of adaptive resonance theory clustering networks and a layer of a sustained temporal order recurrent temporal order network. The described invention has applications in video forensics, data mining, and intelligent video archiving.

The invention relates to a wind turbine drive chain vibration noise suppression and incipient fault feature extraction method. The method includes utilizing the experience mode to analyze single measuring point vibration signals, screening intrinsic mode functions capable of characterizing the fault feature frequency, reconstructing and acquiring fault feature signals to highlight the fault features, removing the noise effect on the constructed signals through autocorrelation analysis, combining with the wavelet packet transform feature frequency extraction method, and implementing the noise suppression of the single measuring point vibration signals; on the basis, utilizing the adaptive resonance theory to combine and analyze a plurality of measuring point vibration signal spectrum after the noise suppression treatment, and implementing the extraction of incipient fault features. The method has the advantages that the effects of background white noise and short interference noise can be removed effectively, the weak incipient fault feature frequency can be extracted, and the method can be directly applied to a wind turbine monitoring and fault diagnosis system and implement the diagnosis of wind turbine drive chain mechanical faults.

The invention discloses a fused face recognition method based on integrated learning, which comprises the following steps: 1.) inputting a face image to be identified; 2.) identification based on ART2 (Adaptive Resonance Theory 2) face recognition method: if the ART2 network system has a returned recognition result, receiving the recognition result, which means the identification is successful, else, entering the next step; 3.) identification based on feature face recognition method: assuming that the threshold of the method is S and the identification score of the face image by the method iss, if s>S, receiving the recognition result, which means that the identification is successful, else, entering the subsequent fused identification step; and 4.) fused identification: sequencing by using the degrees of similarity which are respectively given out by the two single recognition methods, and comparing the recognition results, wherein the first ones in the sequence are identical, receiving the recognition result, which means that the identification is successful, else, the identification fails. By adopting the concept of integrated learning, the ART2 face recognition method and feature face recognition method are fused and complemented, thereby overcoming the limitations in the single face recognition method and enhancing the integral recognition performance.

A sequence layer in a machine-learning engine configured to learn from the observations of a computer vision engine. In one embodiment, the machine-learning engine uses the voting experts to segment adaptive resonance theory (ART) network label sequences for different objects observed in a scene. The sequence layer may be configured to observe the ART label sequences and incrementally build, update, and trim, and reorganize an ngram trie for those label sequences. The sequence layer computes the entropies for the nodes in the ngram trie and determines a sliding window length and vote count parameters. Once determined, the sequence layer may segment newly observed sequences to estimate the primitive events observed in the scene as well as issue alerts for inter-sequence and intra-sequence anomalies.

The invention discloses a multi-objective multi-modal particle swarm optimization method based on Bayesian adaptive resonance. The method comprises the following steps: dividing all particles into a plurality of populations by using a Bayesian adaptive resonance theory; sorting the particles of each population according to a non-dominated sorting method and the special congestion distance; updating the particles in the population by using the individual optimization of the particles and the global optimization of the population; connecting the non-dominated solution sets of various groups endto end to form a closed loop topology, and performing local exploration by using a particle swarm optimization algorithm based on the loop topology; and repeating the two updating and exploring processes until a termination condition is met, and outputting all the non-dominated solution sets and the Pareto frontier. The method is suitable for optimization of solving the multi-target multi-modal problem, the distribution of the Pareto leading edge can be found in the target space, the corresponding Pareto optimal solution set can be found in the decision variable space, a redundant backup method is provided, and the reliability of engineering practice activities is improved.

The invention discloses a cell interruption detection positioning method based on an adaptive resonance theory. The method comprises the following steps of: in an acquisition region including a plurality of cells in, acquiring kPI, user identification and position information of a user in a mode that the user reports a measurement report periodically, and clustering the user by adopting a method based on an adaptive resonance theory (ART) network and a K-S test (Kolmogorov-Smirnov test) according to the KPI information; ; and judging and positioning an interrupted cell in an acquisition area by combining user position information according to a clustering analysis result. According to the invention, based on the ART method, the condition that there are few or even no tagged historical datain the network is fully considered, and can can accurately and effectively complete the cell interruption detection function in combination with K-S test method, and the method has a good positioningeffect on the interrupted cell by combining the position information.

The invention discloses a predictive maintenance method for an uninterruptible power supply (UPS). The method comprises the following steps: collecting signal characteristics of a preset type of UPS equipment in a machine room; performing dimension reduction processing on the preset type of signal features by using a principal component analysis method to obtain main signal features; predicting the real-time state of the UPS equipment by adopting a simplified fuzzy adaptive resonance theoretical graph neural network according to the main signal characteristics; predicting the residual servicelife of the UPS equipment by adopting a multi-scale convolutional neural network according to the main signal characteristics; and matching a corresponding maintenance decision for the UPS equipment according to the real-time state and the prediction result of the residual service life. The invention further discloses an electronic device and a computer readable storage medium. Therefore, maintenance decision suggestions of the single UPS equipment and the whole machine room can be given according to various indexes designed under different conditions, accidents or excessive maintenance of theUPS equipment is prevented, the maintenance strategy of the whole machine room is adjusted in time, and the maintenance effect is improved.